Luminescence (noun)

A phenomenon of emission of light by a substance not resulting from heat.

Origin:

Late 16th century, from latin lūminēscēre 'to shine', from lūmen 'light'. .

Examples:

1. The luminescence of the fireflies filled the night sky with light.
2. The minerals displayed a beautiful luminescence under ultraviolet light.
3. Bioluminescence is the natural emission of light by certain organisms.
4. The luminescence of the northern lights is a spectacular sight to behold.
5. The luminescence of the stars in the galaxy was an awe-inspiring sight.